Conversion of methane to C2 and C3 hydrocarbons over TiO2/ZSM-5 core–shell particles in an electric field

Han, Qiao; Tanaka, Atsuhiro; Matsumoto, Masayuki; Endo, Akira; Kubota, Yoshihiro; Inagaki, Shigenori

doi:10.1039/c9ra06927e

Cited by 10 publications

(3 citation statements)

References 64 publications

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“…Consequently, a new alternative is required, which can be performed at a low temperature with improved C 2 selectivity. [ 22,23 ]…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, a new alternative is required, which can be performed at a low temperature with improved C 2 selectivity. [22,23] To date, among the proposed alternatives, nonthermal plasma (NTP) is attracting great attention as a promising solution for CH 4 activation at low temperatures. In the plasma reaction, the CH 4 is first dissociated into a methyl radical by the plasma, and the methyl radical is then dimerized to C 2 H 6 with the electron (e) generated by the plasma reaction, as follows:…”

Section: Introductionmentioning

confidence: 99%

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Plasma methane activation on mesoporous silica for energy efficiency improvement

Park

Kim

2022

Plasma Processes & Polymers

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This study describes plasma CH4 activation on mesoporous silica (SBA‐15) with a high specific surface area (SSA) for energy efficiency improvement. A dielectric barrier discharge plasma was used, and the SSA of SBA‐15 was varied by controlling the hydrothermal reaction (HR) temperature. The effect of the SSA was investigated to improve the plasma CH4 activation. The synthesized SBA‐15 had a well‐ordered two‐dimensional hexagonal structure. CH4 conversion and C2 selectivity using plasma catalysis were twice as high as those using only the catalyst, because vibrationally excited CH4 can be adsorbed with low activation energy. Additionally, the energy efficiency was higher than that of other plasma catalysts when the plasma was applied to mesoporous SBA‐15 with the SSA of 516 m2 g−1 at a discharge frequency of 0.1 kHz.

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“…Consequently, a new alternative is required, which can be performed at a low temperature with improved C 2 selectivity. [ 22,23 ]…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Plasma methane activation on mesoporous silica for energy efficiency improvement

Park

Kim

2022

Plasma Processes & Polymers

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“…1,2 Likewise, the Methanol-to-Olefins process also requires partial oxidation of methane to CO followed by catalytic reduction to form methanol (150 °C-300 °C, 50-150 atm) and the subsequent catalytic conversion of methanol to a variety of alkenes (450 °C-600 °C, 2-20 atm). 3,4 Other methods to form C 2+ hydrocarbons from methane such as high temperature pyrolysis, 5 direct nonoxidative conversion [5][6][7] and plasmas 5,8,9 are used in some synthesis reactions; however, these processes also show somewhat limited efficiencies and selectivities. 10 While several of these alternative methane coupling processes have been demonstrated in laboratories or are practiced commercially (viz.…”

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confidence: 99%

Communication—Electrocatalytic Coupling of Methane at Platinum Oxide Electrodes in Superacids

Fang

Arges

et al. 2020

J. Electrochem. Soc.

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Electrochemical oxidation of methane in the absence of chemical oxidants offers the potential to directly synthesize high value hydrocarbons at low temperatures. Experimental results demonstrate methane oxidization at oxidized Pt electrodes in liquid superacid electrolytes. Ethane and ethylene are observed as products under chronoamperometric experiments at room temperature. Faradaic efficiencies for C2 products range from 5% to 25% at anodic potentials between 0.8 to 1.4 V vs RHE. A generalized Lewis-acid Pt2+ mechanism including methylidene coupling is proposed.

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Production of Acetylene from Viable Feedstock: Promising Recent Approaches

Gyrdymova,

Lebedev,

et al. 2024

ChemPlusChem

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The potential of acetylene is extremely high both in chemical industry and synthetic applications due to unsaturated nature and the smallest C≡C unit. The production of many essential necessities is originated from acetylene; however, the formation of acetylene molecule requires a lot of energy. Currently, the access to acetylene is based on coal processing, methane reforming and calcium carbide hydrolysis. Recently, extensive research has been done to decrease the cost of acetylene. In this review, the routes to acetylene were highlighted, considering the energy consumption in kW/t of the product to evaluate the best approach. Since energy prices depend on various regions, the cost of the product is complicated. The manufacturing of acetylene is usually accompanied by formation of by‐products, which may be valuable or not. The review should help to identify current status and not overlook promising approaches.

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Conversion of methane to C₂ and C₃ hydrocarbons over TiO₂/ZSM-5 core–shell particles in an electric field

Abstract: A TiO2/ZSM-5 composite catalyst efficiently works for the oxidative coupling of methane and the subsequent ethylene-to-propylene reactions in an electric field.

Cited by 10 publications

References 64 publications

Plasma methane activation on mesoporous silica for energy efficiency improvement

Plasma methane activation on mesoporous silica for energy efficiency improvement

Communication—Electrocatalytic Coupling of Methane at Platinum Oxide Electrodes in Superacids

Production of Acetylene from Viable Feedstock: Promising Recent Approaches

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